Mathematics
j36
16

Solve the system of equations by substitution. 3/8x + 1/3y =17/25 x + 7y = 8

+1
(1) Answers
Cruea881

If you would like to solve the system of equations by substitution, you can do this using the following steps: 3/8x + 1/3y = 17/25  x + 7y = 8 ... x = 8 - 7y  ______________ 3/8x + 1/3y = 17/25 3/8 * (8 - 7y) + 1/3y = 17/25 3 - 21/8 * y + 1/3 * y = 17/25 - 21/8 * y + 1/3 * y = 17/25 - 3 -63/24 * y + 8/24 * y = 17/25 - 3 -55/24 * y = 17/25 - 75/25 -55/24 * y = -58/25 55/24 * y = 58/25 y = 58/25 * 24/55 y = 1392/1375 x = 8 - 7y = 8 - 7 * 1392/1375 = 8 - 9744/1375 = 1256/1375 (x, y) = (1256/1375, 1392/1375) The correct result would be (1256/1375, 1392/1375).

Add answer